实验08-Java之网络编程

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1、实验八网络编程1．实验目的（1）掌握Socket通信。（2）掌握UDP通信2．实验内容实验题1利用Socket类和ServerSocket类编写一个C/S程序，实现C/S通信。客户端向服务器端发送Time命令，服务器端接受到该字符串后将服务器端当前时间返回给客户端；客户端向服务器端发送Exit命令，服务器端向客户端返回“Bye”后退出。packagecn.e;importjava.io.BufferedReader;importjava.io.BufferedWriter;importjava.io.DataInputStream;importjava.io.IOE

2、xception;importjava.io.InputStreamReader;importjava.io.OutputStreamWriter;importjava.net.Socket;importjava.net.UnknownHostException;importjava.util.Scanner;publicclassClient{publicstaticvoidmain(String[]args){Socketclient=null;InputStreamReaderin=null;//将字节流变为字符流，有转换功能OutputStreamWrite

3、rout=null;try{client=newSocket("localhost",4331);}catch(UnknownHostExceptione2){//TODOAuto-generatedcatchblocke2.printStackTrace();}catch(IOExceptione2){//TODOAuto-generatedcatchblocke2.printStackTrace();}try{in=newInputStreamReader(client.getInputStream());}catch(IOExceptione1){//TODO

4、Auto-generatedcatchblocke1.printStackTrace();}try{out=newOutputStreamWriter(client.getOutputStream());}catch(IOExceptione1){//TODOAuto-generatedcatchblocke1.printStackTrace();}BufferedWriterbout=newBufferedWriter(out);BufferedReaderbin=newBufferedReader(in);while(true){//从客户端向服务器传输数据Sy

5、stem.out.println("请输入'Time'或者'Exit'");Scannerreader=newScanner(System.in);try{bout.write(reader.next());}catch(IOExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}try{bout.newLine();}catch(IOExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}try{bout.flush();}c

6、atch(IOExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}Stringmassage=null;try{massage=bin.readLine();}catch(IOExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}if(massage.equals("Bye")){System.out.println("From server: "+massage);break;}elseSystem.out.printl

7、n("从服务器返回的时间："+massage);}try{client.close();}catch(IOExceptione){//TODOAuto-generatedcatchblocke.printStackTrace();}}}packagecn.e;importjava.io.BufferedReader;importjava.io.BufferedWriter;importjava.io.DataOutputStream;importjava.io.IOException;importjava.io.InputStreamReader;importj